Photography techniques help?
i’m a beginner when it comes to photography.
I want to take shots of people jumping, walking or simply moving so i set the shutter speed to 500(or any fast shutter speeds) but the picture always becomes dark.. why is this happening? any help?
well, let’s say i don’t want to use flash, what should my f stop or ISO be like?
I’m using a D90 camera.
shutter priority or manual
Exposure is a triangle composed of three variables: ISO, shutter speed and f-stop. Changing ISO affects one or both of the other two. Leave the ISO at a set value and changing the f-stop affects the shutter speed just as changing the shutter speed affects the f-stop.
Lets look at this using the "Sunny 16 Rule" which states: "On a sunny day, set your f-stop to f16 and your shutter speed to 1/ISO." So if we’re out on a sunny day using ISO 100 here is the shutter speed/f-stop relationship:
f16 @ 1/100 sec.
f11 @ 1/200 sec.
f8 @ 1/400 sec.
f5.6 @ 1/800 sec.
f4 @ 1/1600 sec.
f2.8 @ 1/3200 sec.
Now if we’re indoors its a whole different situation. Suppose we’re in a room with average light. If we try to use ISO 100 we will get very slow shutter speeds – perhaps as low as 1/4 sec. at f2.8. Obviously we won’t be stopping any motion. As we increase the ISO our shutter speed will increase (leaving the f-stop at f2.8): 200 = 1/8 sec.; 400 = 1/15 sec.; 800 = 1/30 sec.; 1600 = 1/60 sec.; 3200 = 1/125 sec. If your lens is slower than f2.8 (maybe f3.5 or f4) your shutter speeds will be even slower than our hypothetical example.
What we need is a faster lens, like a 50mm f1.4. At ISO 100 with the f1.4 lens our shutter speed becomes 1/15 sec.; at 200 its 1/30 sec.; at 400 its 1/60 sec.; at 800 its 1/125 sec.; at 1600 its 1/250 sec.; at 3200 its 1/500 sec.
NOTES:
1) To be honest, I’ve really no idea what constitutes a room with "average light". Perhaps 2 lamps with 150 watt bulbs? A room with a large north-facing window?
2) The shutter speeds I used for the indoor examples are from my FotoSharp "Day & Night Exposure Guide" and are based on a mechanical shutter. Since the shutter in your D90 is electronically controlled your shutter speeds would be different but similar. The ISO/shutter speed relationship at a constant aperture is still valid.
3) I used shutter speeds based on an electronically controlled shutter for the "Sunny 16" examples. Back in the day of mechanical shutters we used the shutter speed closest to the ISO: 1/125 sec. at f16 using ISO 100.
Posted in photography techniques
December 28th, 2009 at 10:18 am
you need a flash.
or ur ISO is set to low
F. is too high maybe
References :
December 28th, 2009 at 11:02 am
What camera are you using? What mode are you in? Manual?
The shutter speed is fast enough to freeze the action–but the aperture is too small to let the light in. Either open up the aperture, or increase the ISO to compensate for it.
————-
Shutter priority-then let the camera set the aperture for you. Set the ISO to high–like 800, or higher. Take a test shot, and see what happens.
References :
December 28th, 2009 at 11:26 am
When you increase the shutter speed, you have to open up the aperture and/or increase the ISO to compensate. You should have no problem using 1/500th in daylight, but indoors it might be too fast. There comes a point where you run out of aperture and ISO sensitivity. When you hold your shutter release halfway down, the camera will indicate in the viewfinder whether you have a correct exposure or not.
References :
December 28th, 2009 at 11:46 am
Exposure is a triangle composed of three variables: ISO, shutter speed and f-stop. Changing ISO affects one or both of the other two. Leave the ISO at a set value and changing the f-stop affects the shutter speed just as changing the shutter speed affects the f-stop.
Lets look at this using the "Sunny 16 Rule" which states: "On a sunny day, set your f-stop to f16 and your shutter speed to 1/ISO." So if we’re out on a sunny day using ISO 100 here is the shutter speed/f-stop relationship:
f16 @ 1/100 sec.
f11 @ 1/200 sec.
f8 @ 1/400 sec.
f5.6 @ 1/800 sec.
f4 @ 1/1600 sec.
f2.8 @ 1/3200 sec.
Now if we’re indoors its a whole different situation. Suppose we’re in a room with average light. If we try to use ISO 100 we will get very slow shutter speeds – perhaps as low as 1/4 sec. at f2.8. Obviously we won’t be stopping any motion. As we increase the ISO our shutter speed will increase (leaving the f-stop at f2.8): 200 = 1/8 sec.; 400 = 1/15 sec.; 800 = 1/30 sec.; 1600 = 1/60 sec.; 3200 = 1/125 sec. If your lens is slower than f2.8 (maybe f3.5 or f4) your shutter speeds will be even slower than our hypothetical example.
What we need is a faster lens, like a 50mm f1.4. At ISO 100 with the f1.4 lens our shutter speed becomes 1/15 sec.; at 200 its 1/30 sec.; at 400 its 1/60 sec.; at 800 its 1/125 sec.; at 1600 its 1/250 sec.; at 3200 its 1/500 sec.
NOTES:
1) To be honest, I’ve really no idea what constitutes a room with "average light". Perhaps 2 lamps with 150 watt bulbs? A room with a large north-facing window?
2) The shutter speeds I used for the indoor examples are from my FotoSharp "Day & Night Exposure Guide" and are based on a mechanical shutter. Since the shutter in your D90 is electronically controlled your shutter speeds would be different but similar. The ISO/shutter speed relationship at a constant aperture is still valid.
3) I used shutter speeds based on an electronically controlled shutter for the "Sunny 16" examples. Back in the day of mechanical shutters we used the shutter speed closest to the ISO: 1/125 sec. at f16 using ISO 100.
References :
37 years of enjoying and learning about photography.
December 28th, 2009 at 12:26 pm
use flash
increase F number
increase ISO
…if in manual just take multiple with increasing ISO each time then you’ll know and make a note of it…it’ll be handy for you in the future in similar situations
References :